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Can I take Morphine and Solifenacin together?

Guia de interação medicamentosa

Taking morphine and solifenacin together can significantly increase the risk of severe constipation and difficulty passing urine (urinary retention). It may also lead to an increased risk of confusion, dry mouth, blurred vision, and extreme sleepiness.

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Por que isso acontece

Both drugs have 'anticholinergic' effects, meaning they slow down the movement of the gut and the bladder. When used together, these effects add up, making it much harder for your body to move waste through your system or empty your bladder.

Use this combination with caution. Ensure you drink plenty of water and eat a high-fibre diet to prevent constipation. If you find it difficult to urinate, or if you experience severe stomach pain or confusion, contact your doctor immediately. Your doctor may need to adjust your doses.

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Respiratory conditions (e.g. asthma, COPD)

Morphine can cause life-threatening breathing difficulties. Do not take this medicine if you have severe asthma or breathing problems.

Opioid dependence and withdrawal

Morphine carries a high risk of addiction and dependence. Long-term use can lead to withdrawal symptoms if stopped suddenly; always follow a tapering schedule.

Glaucoma

Do not take solifenacin if you have narrow-angle glaucoma that is not being effectively treated, as it can increase the pressure in your eyes.

Urinary or gastric retention

Do not take solifenacin if you have severe difficulty passing urine or if you have a condition where your stomach empties very slowly (gastric retention).

Álcool

It is best to avoid or strictly limit alcohol while taking morphine. Combining alcohol with morphine significantly increases the risk of dangerous side effects, such as extreme sleepiness, breathing difficulties, and a potentially fatal overdose.

Suco de toranja

Avoid drinking large amounts of grapefruit juice. Grapefruit can increase the level of solifenacin in your blood, which may increase the risk of side effects like dry mouth, blurred vision, and constipation.

Cafeína (Café, Chá, Bebidas energéticas)

While not a direct chemical interaction, caffeine is a bladder irritant and a diuretic. Since solifenacin is used to treat overactive bladder symptoms, consuming caffeine may reduce the effectiveness of your treatment.

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Taking multiple medicines? Our Verificador de Interações de Medicamentos helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Aviso Legal

Esta informação é apenas para fins educacionais gerais e não deve ser considerada como um substituto para aconselhamento médico profissional. Sempre consulte seu médico, farmacêutico ou outro profissional de saúde qualificado antes de tomar decisões sobre seus medicamentos. As circunstâncias individuais podem variar, e somente um profissional de saúde que conheça seu histórico médico pode fornecer orientações personalizadas.

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Histórico do artigo

As informações nesta página são escritas e revisadas por clínicos qualificados.

  • 25 Jan 2026 | Publicado originalmente
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